Cannot push to github
I'm just about to push my small feature to vanilla on github but I keep getting an authentication error saying "remote: Permission to vanilla/vanilla.git denied to". I'm using the latest Sourcetree and I have a github account for which the OAuth box shows a green flag.
Since this is my first time, I'd like to ask for some guidance if this is just some auth problem which I have to solve on my side or is happening because I haven't forked the repo but just cloned it. (Github help says: "If you don't have write access to the repository where you'd like to create a pull request, you must create a fork, or copy, of the repository first.")
Can you tell me if I have write access?